From the Website: Do you have what it takes to rule the Galaxy? Engage your Hero in the battle for galactic domination! Be the first to explore space, develop technology, and control planets and you will become the Ruler of the Galaxy. Galaxy is a two player HeroCard game that can be expanded to a three or four player game with additional decks. Expanded by: HeroCard Galaxy Crab Expansion Deck HeroCard Galaxy EGG Expansion Deck